Teledyne 275R - Portable turbine generator purge gas analyzer - Manual (Page 17)

5.1
TELEDYNE ANALYTICAL INSTRUMENTS
Maintenance & Maintenance & Maintenance & Maintenance & Maintenance & T T T T Trrrrroub oub oub oub oubleshooting 5.0 leshooting 5.0 leshooting 5.0 leshooting 5.0 leshooting 5.0
Maintenance & Maintenance & Maintenance & Maintenance & Maintenance & T T T T Trrrrroub oub oub oub oubleshooting leshooting leshooting leshooting leshooting
Since no moving parts are used in the analyzer, no routine mainte-
nance is required, other than checking the gas flow rate periodically.
Symptom Symptom Symptom Symptom Symptom Cause Cause Cause Cause Cause What What What What What T T T T To Do o Do o Do o Do o Do
a) Bad fuse.
b) The power supply of +15V
and -15V may be defective.
c) The bridge power supply
(100 mA) may be defective.
a) Blocked vent may be
causing back-pressure in
the measurement cell,
resulting in high cell pres-
sure, erratic readings, and a
constricted flow.
a) The temperature controller
may not be working.
1. No output.
2. Output drifting very slowly.
3. Output goes high slowly when
the instrument is first turned on.
a) Check and replace fuse.
b) If faulty, change the power
supply board.
c) Measure it, and if faulty,
change the voltage regula-
tor/amplifier board.
a) Clean the vent.
a) Check that the bulb above
the power switch is flashing,
and if the bulb is not flash-
ing, change the temperature
controller board.
b) If the temperature controller
is working, perform the
same checks as in #2
above.